Guide to the Air Canada Carry-On Size, Weight, & Liquids

Air Canada’s carry-on rules are straightforward, but the fare you book can change what you’re allowed to bring onboard. The biggest thing to watch: Economy Basic fares purchased on/after January 3, 2025, can be “personal item only” on many Canada/U.S./Mexico/Caribbean routes, which turns a normal carry-on into a checked bag. Below is the quick cheat sheet, then the details.

Below is the quick cheat sheet, then the details.

Air Canada carry-on rules at a glance

If you only read one section, make it this one—these are Air Canada’s published size limits, how Basic fares change the rules, and what to expect on weight and liquids.

• Standard carry-on (overhead bin): 21.5″ H x 15.5″ W x 9″ D (55 x 40 x 23 cm), including wheels and handles
• Personal item (under the seat): 13″ H x 17″ W x 6″ D (33 x 43 x 16 cm), including wheels and handles (if applicable)
• Weight limit: No published numeric carry-on weight limit, but your bag must be light enough to stow overhead unassisted
• Basic fare warning (important): On certain routes, Economy Basic may allow only one personal item (no standard carry-on)
• Liquids: For U.S. departures, the TSA 3-1-1 rule applies (plain-English breakdown in my TSA liquids rule guide)

For quick comparisons across airlines, keep my carry-on size by airline guide bookmarked.

Air Canada Airlines Carry-On Size (Dimensions)

Air Canada’s standard carry-on size limit is:

• 21.5″ H x 15.5″ W x 9″ D (55 x 40 x 23 cm)

Air Canada measures maximum size including wheels and handles, so a bag that’s “close enough” when empty can tip over the line once it’s packed and bulging.

My practical tip

Measure your bag fully packed, from the outside, including wheels/handles and any overstuffed pockets. That’s the version of your bag Air Canada cares about.

Air Canada personal item size limit

Your personal item must not exceed:

• 13″ H x 17″ W x 6″ D (33 x 43 x 16 cm)

A small backpack, laptop bag, or tote usually works well—just avoid rigid bags that can’t compress if you’re right at the limit.

Most full-service airlines like Delta, United, and American do not typically have bag sizers at the gate. Air Canada does, which confirms how strict they are about the size of your carry-on.

Automated carry-on baggage sizers

Air Canada recently introduced automated carry-on baggage sizers pre-security in the Montreal (YUL), Toronto (YYZ), and Vancouver (YVR) airports.

These new, touchless machines are easier and faster to use than metal sizers. If you are at one of these airports, make sure that your carry-on bag complies with the sizing outlined above to avoid having to check your carry-on bag at the gate.

Air Canada Economy Basic fares: when a carry-on is NOT included

This is where many travelers get surprised.

For Economy Basic tickets purchased on or after January 3, 2025, Air Canada states that carry-on baggage is no longer included (you’re permitted only one personal item) when traveling:

• within Canada
• to and from the U.S. (including Hawaii and Puerto Rico)
• to and from Mexico, Central America, and the Caribbean

If you bring an additional bag (including what you’d normally treat as your carry-on), it will need to be checked for a fee.

Connecting onward internationally?

Air Canada also states that if you’re on an Economy Basic fare connecting onward to an international destination, your ticket may still allow one standard carry-on + one personal item for the entire trip.

If you book Basic, it’s worth verifying your allowance right in your booking confirmation and on your boarding pass.

Air Canada Carry-On Weight Limit

Air Canada does not publish a numeric carry-on weight limit in its carry-on policy. Instead, the rule is practical: your carry-on must be light enough for you to lift and store in the overhead bin without assistance.

If you’re packing heavy items (books, camera gear, dense shoes), plan for that reality—especially on smaller aircraft where overhead space can be tighter.

Recommended Carry-On Bag for Air Canada

If I’m bringing an overhead-bin carry-on on Air Canada, I’d go with the Travelpro VersaPack Spinner 20″ from the two bags I use. It’s the better match for Air Canada’s tighter carry-on height limit, while still packing well and rolling smoothly.

Manufacturer dimensions:

• Overall dimensions (includes wheels and carry handles): 22″ H x 14″ W x 9″ D
• Case dimensions (the main body): 19.75″ H x 13.25″ W x 8.5″ D

Does it fit Air Canada’s carry-on size rules?

Air Canada’s published maximum carry-on size is 21.5″ H x 15.5″ W x 9″ D. The VersaPack is a strong match on width and depth, but its 22″ overall height is slightly over the published height limit.

My practical approach:

If you want the lowest-risk option on Air Canada, choose a carry-on with an overall height of 21.5″ or less.

I keep it unexpanded and avoid overstuffing exterior pockets (that’s what usually pushes a bag into “doesn’t fit the sizer” territory).

Air Canada Carry-On Liquids Policy

The rules for carry-on liquids are set by the CATSA (Canadian Air Transport Security Authority), not by the airline.  Air Canada doesn’t have its own Liquids Policy; it simply enforces the CATSA’s rules.

However, here are some tips Air Canada specifically provides regarding liquids and liquid size limits:

• If you travel with liquids or gels in containers over 100mL/100g (3.4oz) in your carry-on baggage you will have these items confiscated at the security checkpoint.
• If you have a connecting flight you’re advised not to purchase liquids or gels in containers over 100 mL / 100 g (3.4 oz) within the secure area at the airport or on board the aircraft if you don’t have:
  • Access to your checked baggage between connecting flights and
  • Room in your checked baggage to pack your duty-free purchases before rechecking your bags for your next flight.
• You cannot consume your own alcoholic beverages on board.

It’s also important to note that the rules for bringing a “liquid” in your carry-on bag differ from those that govern what you can bring in your checked luggage. Liquids in a carry-on bag must be 3.4 ounces or smaller and fit in a 1 quart-sized container. Anything larger must be placed in your checked luggage.

The CATSA Liquids Rule

CATSA’s liquids rule is simple: bring liquids, aerosols, and gels in containers of 100 mL / 100 g (3.4 oz) or less, and make sure they all fit in one clear, closed, resealable bag with a capacity of no more than 1 L (1 qt). You’re limited to one bag per traveler, and you should remove it from your carry-on at screening.

More related articles….

1. Air Canada Student Discount Flight Pass
2. How to fly standby on Air Canada
3. WestJet Carry-on Rules